142 Examination of St-. Ph/rc's llj-potbefis 



greatly contribute to our high equinoctial tides ; and when 

 thefe efFu lions ccafe in October, our tides begin to ditninilh. 



If the tides depended on the action of the fun and moon 

 on the equator, they ought to be much more confiderable 

 towards the focus of their movements than any where elfe. 

 But this is • ontrary to fact (Dampier fays). From" Cape 

 Blanc, from the third to 30' fbuth lat. the Mux and reflux of 

 the fea does not exceed two feet. The tides in the Eaft 

 Indies rife not above a foot j near the poles they rile 20 or 

 35 feet. 



In the road of the iftand Maffafuero (33 46' fouth lat. 

 3q° %%' weft long.) the lea runs twelve hours north, and then 

 flows back twelve hours fouth : its tides, therefore, run to- 

 wards the line. — Byron, April 1765. 



At E.nglifn Creek, an the to a ft of New Britain < cf fouth 

 Jat. 152^ weft long.) the tide has a flux and reflux once in 

 34 hours.— Carteret, Aug. 1J&7* 



At the Bay of Ifles, in New Zealand ($5° fouth lat.), the 

 tides fet in from the fouth. — Cook, Dec. 1769. 



At Endeavour River, in New Holland, neither the flood 

 nor ebb tides were confiderable, excepting once in 24 hours. 

 — June, 1770. 



At Chrilimas Harbour, in Kerguelen's Land, the. flood, 

 came from the fouth-eafi, runnine; two knots an hour. — 

 Cook, Dec. 1776. It appears to have been regular and di- 

 urnal, i. c. a tide of twelve hours. The tide riles and falls 

 about four feet. 



At Olaheite the tides feldom life more than twelve or four- 

 teen inche? ; and it is hiffh water nearly at noon, as well at the 

 quarters as at the full and change of the moon. — Cook, Dec. 

 J777. It is evident, from a tabic of thefe tides for 26 days, 

 that there was but one tide a dav ; and this,- during the whole 

 time, was at its mean height between n and 1. Thefe tides, 

 therefore, can have no relation to the phafes of the moon. 



Let us now take a curfory view of the effects produced by 

 the tides in the northern part of the South fea. At the en- 

 trance of Nootka it is high water, on the days of new and full 

 moon, at twenty minutes paft twelve : the perpendicular rift? 

 and fall e'ght feet nine inches ; which is to be underftood of 



the 



